On my NERVES
These branching extensions of a neuron receive and integrate incoming information.
This is the brief electrical charge that travels down a neuron's axon.
What is an action potential?
This neurotransmitter influences the perception of pain or pleasure.
What are endorphins?
This division of the nervous system connects the brain and spinal cord to the rest of the body.
What is the peripheral nervous system (PNS)?
In this approach, brain activity, hormones and genetics influence a person's behavior.
What is the biological/neuroscience perspective?
This part of the neuron collects and adds up all incoming positive (excitatory) and negative (inhibitory) electrical signals from the neuron's dendrites and cell body.
What is the axon hillock?
A neuron must reach this minimum level of stimulation before it fires an action potential.
What is the threshold?
This neurotransmitter affects mood, hunger, sleep and arousal. Its undersupply can depress mood.
What is serotonin?
These neurons carry incoming information from the sensory receptors toward the brain and spinal cord.
What are sensory (afferent) neurons?
Who is Sigmund Freud?
This fatty tissue layer surrounds some axons and speeds neural impulses as they travel from node to node.
What is the mylein sheath?
A neuron receives several excitatory signals, but they are not strong enough to reach threshold. What happens?
What is the neuron does not fire the action potential.
This neurotransmitter is involved in memory, and is a major excitatory neurotransmitter.
What is GABA (gamma aminobutyric acid)
You decide to raise your hand in class. This division of the PNS controls the skeletal muscles that allow you to make the voluntary movement.
What is the somatic nervous system?
It is a mental health condition associated with a strong and ongoing need for perfection, order and control.
What is OCD (Obsessive-Compulsive personality disorder)?
Unlike neurons, these nervous system cells support, nourish, and protect neurons and can help provide myelin.
What are glial cells (glia)?
During an action potential, positively charged sodium ions move into the axon. This causes the inside/outside charge difference to temporarily decrease. This process is called what?
What is depolarization?
This neurotransmitter enables muscle action, memory and learning
What is acetylcholine (AcH)?
Your heart rate increases and digestion slows when you suddenly realize you are about to give a difficult presentation. Which division of the autonomic nervous system is responsible?
What is the sympathetic nervous system?
A psychologist investigates how a person's interpretation of an event influences their emotions and behavior. Which perspective is being used?
What is the cognitive perspective?
A researcher wants to trace the direction information normally travels through a neuron. Put these structures in the correct order: axon, cell body, dendrites.
What are dendrites --> cell body --> axon?
What is "all or none" (its strength does not increas with stimulus intensity). A stronger stimulus can cause more neurons to fire and or cause neurons to fire more frequently.
This neurotransmitter influences movement, learning, attention, and emotion.
What is dopamine?
After the presentation is over, you heart rate begins to slow and your body returns toward its normal resting state. Which division is primarily responsible, and what larger function do the two autonomic divisions work together to maintain?
What is the parasympathetic nervous system, and what is homeostasis?
A psychologist studying anxiety considers genetic vulnerability, thought patterns, and the person's family and cultural environment., What broad approach is being used?
What is the biopsychosocial approach?